BOSS Audio PH3000D Phantom 3000-watts Monoblock Class D 1 Channel 1 Ohm Stable Amplifier with Remote Subwoofer Level Control Amplifier Class: Class D Technology: Digital Number of Output Channels: 1 Total Power: 3000 Watts Max Power @ 1 Ohm: 3000 Watts x 1 Max Power @ 2 Ohms: 2200 Watts x 1 Max Power @ 2 Ohms, when strapped with same model amplifier: 6000 Watts RMS Power @ 4 Ohms: 1200 Watts x 1 Frequency Response: 15 to 150 Hz Total Harmonic Distortion (THD) @ RMS Output: 0.01% Signal-to-Noise Ratio (SNR): 100 dB Minimum Speaker Impedance: 1 Ohms Variable Low Pass Crossover: 50 to 150 Hz Dimensions: 2.25"" x 13"" x 9.5"" Soft Turn-On Circuit Master/Slave Switch Thermal Overload & Speaker's Short Protection Remote Subwoofer Level Control Power & Protection LEDs Strapping Capability Input Sensitivity Selector Monoblock Phantom amplifier with Class D power supply Delivers 3000 Watts at 1 ohm; 2200 Watts at 2 ohms; 1200 Watts at 4 ohms Line and speaker level inputs with variable gain control Low-pass variable crossover; 18dB bass boost Includes remote sub control